A radioactive sample undergoes decay as per the following gragp. At time` t=0`, the number of undecayed nuclei is `N_(0)`. Calculate the number of nuclei left after `1 h`.
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At given instant, there are 25% undecayed nuclei in a sample. After 10 second the number of nuclei reduces to 12.5%

A radioactive sample is decayed 20% in one day. After next two days, the undecayed percentage of nuclei will be

A radioactive sample is decayed 20% in one day. After next two days, the undecayed percentage of nuclei will be

Decay constant of two radioactive samples is lambda and 3lambda respectively. At t = 0 they have equal number of active nuclei. Calculate when will be the ratio of active nuclei becomes e : 1 .

Decay constant of two radioactive samples is lambda and 3lambda respectively. At t = 0 they have equal number of active nuclei. Calculate when will be the ratio of active nuclei becomes e : 1 .

Nuclei of radioactive element A are being produced at a constant rate. alpha . The element has a decay constant lambda . At time t=0 , there are N_(0) nuclei of the element. Calculate the number N of nuclei of A at time t.

At a given instant there are 25% undecayed radioactive nuclei in a sample . After 10 sec the number of undecayed nuclei remains 12.5% Calculate : (i) mean - life of the nuclei and (ii) The time in which the number of undecayed nuclears will further reduce to 6.25 % of the reduced number.

Radioactive element A are being produced at a constant rate alpha . The element has a decay constant lambda . At time t=0, there are N_0 nuclei of the element. Calculate the number of nuclei A at time t.

Decay constant of two radioactive samples is lambda and 3lambda respectively. At t = 0 they have equal number of active nuclei. Calculate t , when will be the ratio of active nuclei becomes e : 1 .

Radioactive element A are being produced at a constant rate alpha . The element has a decay constant lambda . At time t=0, there are N_0 nuclei of the element. If alpha=2N_0lambda , calculate the number of nuclei of A after one half life of A and also limiting value of N as t rarr infty .